Abstract:
Stomatal conductance (gs) is a key player in the control of bio(geo)chemical cycles and the associated vegetation processes. The present work demonstrates a strong reduction of gs in response to increasing CO2 and VPD in grassland vegetation, which also affected key physiological processes such as leaf growth, nitrogen acquisition and water-use efficiency. The results contribute to a better understanding of the central role of stomatal conductance of grasses under a changing environment.